No matter when our vacation time arrives during the year, many of us would not consider it a vacation at all unless we could travel with our pooch. Dogs are not low-maintenance traveling companions. When it comes to the safety of you, your dog, and others, as well as the regulations of either private companies or a government agency, you will need to do some planning ahead. For most of us, traveling will mean moving by plane or by car. (We definitely frown upon hitchhiking as a means of getting from point A to point B. We are pro-wormhole, and if...